Hydrogel bioelectronics

Chemical Society Reviews, Journal Year: 2018, Volume and Issue: 48(6), P. 1642 - 1667

Published: Nov. 26, 2018

Hydrogels have emerged as a promising bioelectronic interfacing material. This review discusses the fundamentals and recent advances in hydrogel bioelectronics.

Language: Английский

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Advanced Soft Materials, Sensor Integrations, and Applications of Wearable Flexible Hybrid Electronics in Healthcare, Energy, and Environment

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(15)

Published: July 8, 2019

Abstract Recent advances in soft materials and system integration technologies have provided a unique opportunity to design various types of wearable flexible hybrid electronics (WFHE) for advanced human healthcare human–machine interfaces. The biocompatible with miniaturized wireless systems is undoubtedly an attractive prospect the sense that successful device performance requires high degrees mechanical flexibility, sensing capability, user‐friendly simplicity. Here, most up‐to‐date materials, sensors, system‐packaging develop WFHE are provided. Details mechanical, electrical, physicochemical, properties discussed integrated sensor applications healthcare, energy, environment. In addition, limitations current discussed, as well key challenges future direction WFHE. Collectively, all‐inclusive review newly developed along summary imperative requirements material properties, capabilities, performance, skin integrations

Language: Английский

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Electrically conductive polymer composites for smart flexible strain sensors: a critical review

Journal of Materials Chemistry C, Journal Year: 2018, Volume and Issue: 6(45), P. 12121 - 12141

Published: Jan. 1, 2018

Electrically conductive polymer composite-based smart strain sensors with different fillers, phase morphology, and imperative features were reviewed.

Language: Английский

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Muscle-Inspired Self-Healing Hydrogels for Strain and Temperature Sensor

ACS Nano, Journal Year: 2019, Volume and Issue: 14(1), P. 218 - 228

Published: Dec. 6, 2019

Recently, self-healing hydrogel bioelectronic devices have raised enormous interest for their tissue-like mechanical compliance, desirable biocompatibility, and tunable adhesiveness on bioartificial organs. However, the practical applications of these hydrogel-based sensors are generally limited by poor fulfillment stretchability sensitivity, brittleness under subzero temperature, single sensory function. Inspired fiber-reinforced microstructures mechano-transduction systems human muscles, a (90.8%), long-lasting thermal tolerant dual-sensory sensor is proposed, with high gauge factor (18.28) within broad strain range (268.9%), low limit detection (5% strain), satisfactory thermosensation (-0.016 °C-1), highly discernible temperature resolution (2.7 °C). Especially introducing glycerol/water binary solvent system, subzero-temperature performance, water-retaining, durable adhesion feature can be achieved, resulting from ice crystallization inhibition dynamic bonding. On account advantageous mechanoreception thermosensitive capacities, flexible touch keyboard signature identification "fever indicator" forehead's realized this device.

Language: Английский

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Toward Perceptive Soft Robots: Progress and Challenges

Advanced Science, Journal Year: 2018, Volume and Issue: 5(9)

Published: July 13, 2018

Abstract In the past few years, soft robotics has rapidly become an emerging research topic, opening new possibilities for addressing real‐world tasks. Perception can enable robots to effectively explore unknown world, and interact safely with humans environment. Among all extero‐ proprioception modalities, detection of mechanical cues is vital, as living beings. A variety sensing technologies are available today, but there still a gap utilize them in practical applications. Here, developments summarized provide comprehensive understanding state art this field. Promising mechanically perceptive described, categorized, their pros cons discussed. Strategies designing sensors criteria evaluate performance outlined from perspective robotic Challenges trends developing multimodal sensors, stretchable conductive materials electronic interfaces, modeling techniques, data interpretation highlighted. The knowledge promising solutions toward discussed analyzed

Language: Английский

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A Highly Efficient Self‐Healing Elastomer with Unprecedented Mechanical Properties

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(23)

Published: April 12, 2019

It is highly desirable, although very challenging, to develop self-healable materials exhibiting both high efficiency in self-healing and excellent mechanical properties at ambient conditions. Herein, a novel Cu(II)-dimethylglyoxime-urethane-complex-based polyurethane elastomer (Cu-DOU-CPU) with synergetic triple dynamic bonds developed. Cu-DOU-CPU demonstrates the highest reported performance for elastomers room temperature, tensile strength toughness up 14.8 MPa 87.0 MJ m-3 , respectively. Meanwhile, spontaneously self-heals temperature an instant recovered of 1.84 continuously increased 13.8 MPa, surpassing original all other counterparts. Density functional theory calculations reveal that coordination Cu(II) plays critical role accelerating reversible dissociation dimethylglyoxime-urethane, which important elastomer. Application this technology demonstrated by stretchable circuit constructed from Cu-DOU-CPU.

Language: Английский

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Wearable and Stretchable Strain Sensors: Materials, Sensing Mechanisms, and Applications

Advanced Intelligent Systems, Journal Year: 2020, Volume and Issue: 2(8)

Published: June 11, 2020

Recent advances in the design and implementation of wearable resistive, capacitive, optical strain sensors are summarized herein. Wearable stretchable have received extensive research interest due to their applications personalized healthcare, human motion detection, human–machine interfaces, soft robotics, beyond. The disconnection overlapped nanomaterials, reversible opening/closing microcracks sensing films, alteration tunneling resistance been successfully adopted develop high‐performance resistive‐type sensors. On other hand, behavior capacitive‐type is largely governed by geometrical changes under stretching/releasing cycles. sensor parameters, including stretchability, sensitivity, linearity, hysteresis, dynamic durability, comprehensively discussed. Finally, promising highlighted detail. Although considerable progress has made so far, still prototype stage, several challenges manufacturing integrated multifunctional should be yet tackled.

Language: Английский

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Stretchable, Transparent, and Self‐Patterned Hydrogel‐Based Pressure Sensor for Human Motions Detection

Advanced Functional Materials, Journal Year: 2018, Volume and Issue: 28(32)

Published: June 21, 2018

Abstract In this study, a binary networked conductive hydrogel is prepared using acrylamide and polyvinyl alcohol. Based on the obtained hydrogel, an ultrastretchable pressure sensor with biocompatibility transparency fabricated cost effectively. The exhibits impressive stretchability (>500%) superior (>90%). Furthermore, self‐patterned microarchitecture surface beneficial to achieve high sensitivity (0.05 kPa −1 for 0–3.27 kPa). hydrogel‐based can precisely monitor dynamic pressures (3.33, 5.02, 6.67 kPa) frequency‐dependent behavior. It also shows fast response (150 ms), durable stability (500 cycles), negligible current variation (6%). Moreover, instantly detect both tiny (phonation, airflowing, saliva swallowing) robust (finger limb motions) physiological activities. This work presents insights into preparing multifunctional hydrogels mechanosensory electronics.

Language: Английский

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Two-Pronged Strategy of Biomechanically Active and Biochemically Multifunctional Hydrogel Wound Dressing To Accelerate Wound Closure and Wound Healing

Chemistry of Materials, Journal Year: 2020, Volume and Issue: 32(23), P. 9937 - 9953

Published: Nov. 24, 2020

A two-pronged strategy of biomechanically active and biochemically functional hydrogel wound dressing which can assist closure have multiple functions to promote healing has been rarely reported. Herein, we designed a series injectable self-healing hydrogels based on quaternized chitosan (QCS), polydopamine-coated reduction graphene oxide (rGO-PDA), poly(N-isopropylacrylamide) (PNIPAm) as multifunctional dressings healing. These excellent thermoresponsive self-contraction tissue adhesion properties. They adhere strongly the skin by actively contracting wounds through self-contraction. Moreover, these exhibit biochemical multifunctions that are beneficial healing, including good property, temperature-dependent drug release ability, anti-infection, antioxidation, conductivity. The in vivo full-thickness defect model demonstrates significantly promoted with accelerated contraction wound-healing process higher granulation thickness, collagen disposition, enhanced vascularization. In summary, conductive adhesive assisting functions, opening approach management combining biomechanical together.

Language: Английский

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Stretchable, Injectable, and Self-Healing Conductive Hydrogel Enabled by Multiple Hydrogen Bonding toward Wearable Electronics

Chemistry of Materials, Journal Year: 2019, Volume and Issue: 31(12), P. 4553 - 4563

Published: May 24, 2019

Conducting polymer hydrogels have been employed in diverse fields such as energy storage and bioelectronics, which possess both the mechanical properties of electronic transport conducting polymers. However, rigid fragile nature polymers hinders long-time stability limits their applications emerging flexible devices. In this work, we developed a novel type multifunctional conductive hydrogel, high conductivity is integrated with excellent stretchability, injectability, rapid self-healing capability, by incorporating multiple hydrogen-bonding 2-ureido-4[1H]-pyrimidinone (UPy) groups cross-linking points into brittle polyaniline/poly(4-styrenesulfonate) (PANI/PSS) network. The formation interpenetrating PANI/PSS network offers hydrogel conduction assisted ionic transport, showing 13 S/m linear response (gauge factor = 3.4) to external strain (≈300%), accurate reliable detection various human motions. Taking advantage reversibility noncovalent cross-links, can be facilely molded different shapes demonstrate complete within 30 s upon damage. combination supramolecular chemistry enables multifunctionalities providing new insights design advanced functional materials 3D printing, wearable devices, electronics.

Language: Английский

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